ATANH
Description
ATANH returns the inverse hyperbolic tangent of a number.
Syntax
ATANH ( number )
| Parameter | Description | 
| number | A number between -1 and 1, excluding -1 and 1. | 
Examples
This function returns .55:
ATANH(.5)
This function returns -.26:
ATANH(.25)
Also, see